Cooling mold



May 23, 1933. L. H. HOMAND 1,910,015

COOLING MOLD Filed Aug. 19. 1930 2 Sheets-Sheet lukh\\\\\\\\\\\\\\\\\\\\\\\n\\\\\\\\ 7mu|r May 23, 1933. L. H. HOMANDCOOLING MOLD Filed Aug. 19. 1950 2 Sheets-Sheet 2 Patented May 23, 1933UNITED STATES PATENT orrlcia'.

mo a. noun), or mean, mwn, assrenoa worm: imw raocass cas'rrns 001mm, orsummon, auannm, a coaroaa'rron or mm coonnm roan The present inventionrelates to improvements in cooling molds and relates more par-.ticularly to an improved cooling mold for die casting and permanentmolds.

An object of the invention is to provide coolin means for the moldswhereby to rapidly issipate the heat and to provide for quicker and moreeconomicalcooling of the molds.

A further object of the invention is to provide cooling fins upon themold back or upon other parts of the mold in such numbers and sizes asto take care of the degree of heat encountered in connection with anypartic- 15 ular industry:

With the foregoing and other objects in view the inventionwill be morefully described hereinafter and more particularly pointed out in theappended claims.

In the drawings,'in whichlike reference symbols refer to like orcorresponding parts throughout the several views,

Fig. 1 is a perspective view of an improved mold back constructed inaccordance with as the present invention.

Fig. 2 is a longitudinal section taken therethrough.

Fig. 3 is a similar section showing a slight modification.

Fig. 4 is a plan view showing a further modification.

Fig. 5 is a fragmentary section taken on an enlarged scale and showing amodified form of mounting of the fins, and as Fig. 6 is a similar viewshowing still another modified form of attaching the fins.

Referring more particularl to the drawings and for the-present toF1gs."1 and 2, 10 designates a mold back provided with an appropriatepattern, which however forms no part of the present'invention, and withthe other equipment usually found upon mold backs for cooperating withthe other mold parts.

In accordance with the present invention there is molded directly uponsuch mold back cooling fins. 11 in such numbers, length and sizes as maybe required to properly dissipate the heat. It is preferred that these50 cooling fins 11, which are spaced apart map- '11 carried therpropriate distance, be cast upon a late 12 and this plate is in turncast with t e mold back 10. The plate 12 and the cooling fins e y are ofany appropriate material and it is preferred that at the bases of thefins 11 the shall be of thicker section, which section s allprogressively decrease outwardly toward the free ends of the fins. Inother words,'the fins are of wedgecross section, tapering toward theirouter edges in order to facilitate the radiation of the heat.

In accordance with Fig. 3 a plate 12a is employed to carry the coolingfins 11, and this late is separate and disti "from the mold ack 10,being secured the eto by the screws or other fastenings 13. In this casethe plate 12a and the fins 11 may be cast as a unit and independentlyfrom the mold back 10 and be afterwards assembled thereon. However, byreason of the separate materials 70 from which made, it is probable thatthe transference of heat'between the mold back 10 and the plate 120 willnot be as free and quick as between the plate 12 and the mold back asshown in Figs. 1 and 2'where these parts are cast integral.

Whereas, in Figs. 1 and 2, the cooling fins 11 are shown as extendingtransversely of the mold back 10, in Fig. 4 I show the cooling fins 11aextending longitudinally of the mold back. It is understood that theycan be made to extend. in any desired direction, either longitudinally,transversely or diagonally.

Also, some of the fins may be thick and some thin, some high and somelow-in order to increase or decrease the cooling effect of the coolingarea.

As shown more particularly. in Fi 5 a modified form of mold back 10a orp ate is shown having T-tracks or slots 14 adapted to receive theflangedbases 15 of modified cooling fins 116. These flanged bases 15 may beslid in from one end of the slots or tracks 14.

In accordance with Fig. 6, the-mold back or plate 10?) is provided withtracks or slots 16 of a shape to conform to the dove-tail bases 17 ofthe cooling fins 11c.

It will of course be understood that the fins may be mounted in avariety of other ways.

. From the foregoing it will be appreciated that cooling fins may bemounted upon the mold back or upon other parts of the molds in suchrelation, sizes and numbers as will adeguately conduct off the heat andcool the mol s.

Having thus described the invention, what is claimed as new is:

1. An improved cooling mold comprising a mold back provided withundercut closely spaced parallel surface grooves occupying substantiallythe entire area of one side of the mold back, wedge shapedheat-disseminating .fins having abruptly widened heat collecting rearportions conforming to the cross section of and snugly fitting in saidgrooves, the heat collecting rear portions of adjacent fins closelyapproaching one another whereby to directly intercept practically alloutwardly moving heat, and discharge a maximum volume to the outer Wedgeshaped portions, and the wedge shaped exterior portions of said ribsenabling said heat to be readily disseminated despite the closeproximity of the ribs to one another.

2. An improved cooling mold comprising a mold back provided with closelyspaced substantially parallel surface grooves occupying substantiallythe entire area of one side of the mold back, heat disseminating finshaving abruptly widened heat-collecting rear portions seated in saidgrooves, said mold back having portions overhangingsaid grooves to holdsaid fin bases in said grooves, theheat collecting rear portions ofadjacent fins closely approaching one another whereby to directlyintercept practically all outwardly moving heat, and discharge a maximumvolume to the outer portions of said fins.

In testimony whereof I hereunto affix'my signature.

LEO HOMAND.

